So called professionals

I usually do a germination test before chucking out seed, just put some seed on moist kitchen roll inside a takeaway container and pop the lid on. It's only packets with really, really bad germination that get thrown into the garden somewhere. A lot of seeds last much longer than they say on the packet, it's mostly things like onions and parsnips which have a big drop off in germination rate. If the germination is poor, just sow more? Recently through all of the brassica seed packets and anything rubbish I sowed as microgreens from which we got a lovely harvest.